SFML

Castle Game Engine

Cross-platform (desktop, mobile, console, web) 3D and 2D game engine. Powerful visual editor. Support for glTF, X3D, IFC and more. Fast clean code using modern Pascal. Free and open-source.

pasvulkan

Vulkan header generator, OOP-style API wrapper, framework and prospective Vulkan-based game engine for Object Pascal

Apus Game Engine

An open source Delphi/Pascal game engine

Ray4Laz

A complete header translation (binding) of the raylib 6.0 to Pascal. Without any funky helper functions for memory alignment issues. Inspired and partially based on the drezgames/raylib-pascal binding, however a little cleaner and more recent, with FPC 3.2.0 and up support.